Member
Joined 2009
Paid Member
I don't if Bud Purvine still contributes here, actually don't know if he's still breathing. I did a search awhile back and kept a copy some of his comments from various places - which means unfortunately I can't you to a specific thread. Bud is a person with great experience and some great insights into drivers - so I put a lot of stock into what he has to say.
As for the AlNiCo version - I don't honestly think I'd want to pay that much extra. And so I didn't. I can't comment on the sound difference from my own experience, but based on people I have asked, people who should know, the difference from the ferrite to the AlNiCo is not huge. But when you are pushing the edge for every little gain, even a small difference is important for some people. And some folks just like to say they have AlNiCo.
I don't entirely agree with this, because what the AN15 can do that no other speaker I have heard can do is faithfully reproduce the dynamics of real instruments.
EQing a speaker flat has no effect on the dynamic performance of a driver.
A comparison required for sure.
Usually the Alnico magnets create a beefier motor than the ceramics, but, at least in the case of the AN8, the alnico motor is quite a bit wimpier, so needs to be taken with a grain of salt. Seems that could be the case with the 15" too, it is rated 4 dB less efficient.
dave
Member
Joined 2009
Paid Member
I have to say the AN15 is the best full range I've yet heard. But I am building with some Alpair 10.3's for a friend and these may finally give me another favourable perspective on full range.
But it sure is nice to behold that 15" driver and it's golden plug - puts a smile on my face.
Member
Joined 2009
Paid Member
Member
Joined 2009
Paid Member
Do you know how old BudP is?
I reckon I would wager, older than you by quite some margin.
How about Nelson Pass, he's not exactly a spring chicken either.
Edit: I am not arguing for Alnico, I've never done the comparison. Just saying don't underestimate the ear.
Last edited:
Member
Joined 2009
Paid Member
Building Audio Nirvana 15" speakers into existing cabinets...
All,
I'm making the bold move of doing my first speaker DIY project with something slightly out of the ordinary. The previous owners installed a beautiful (in my humble opinion) wood cabinet that extends the length of the living room. They put speakers in the cabinet previously, but I thought it would be fun to build speakers using the existing cabinetry.
Now, this obviously brings up a lot of challenges, notably that it's likely that a large part of the cabinet will be vibrating - I don't think it's going to be possible to brace the inside of the existing cabinet sufficiently to prevent this from happening. I'd appreciate any thoughts / suggestions on things to add additional bracing from the inside.
There was a bit of discussion earlier in this thread (read all 40 pages) about the purpose of the horizontal brace below the speaker, and that it helps to distribute energy to the side and rear panels. Seeing that the side and rear panels won't actually get any sound out to the listener, and may actually be detrimental, does it make more sense to skip that?
Any suggesting on porting vs. skipping it? I saw a little discussion, but not much on that.
The volume of the cabinet is approx 45.5"H x 22.25"W x 17"D. I was planning to put foam on the side and back internal walls, and doing as much work as I can to seal the speaker cabinet so that there isn't any leakage into the other sections.
Thanks in advance!
All,
I'm making the bold move of doing my first speaker DIY project with something slightly out of the ordinary. The previous owners installed a beautiful (in my humble opinion) wood cabinet that extends the length of the living room. They put speakers in the cabinet previously, but I thought it would be fun to build speakers using the existing cabinetry.
Now, this obviously brings up a lot of challenges, notably that it's likely that a large part of the cabinet will be vibrating - I don't think it's going to be possible to brace the inside of the existing cabinet sufficiently to prevent this from happening. I'd appreciate any thoughts / suggestions on things to add additional bracing from the inside.
There was a bit of discussion earlier in this thread (read all 40 pages) about the purpose of the horizontal brace below the speaker, and that it helps to distribute energy to the side and rear panels. Seeing that the side and rear panels won't actually get any sound out to the listener, and may actually be detrimental, does it make more sense to skip that?
Any suggesting on porting vs. skipping it? I saw a little discussion, but not much on that.
The volume of the cabinet is approx 45.5"H x 22.25"W x 17"D. I was planning to put foam on the side and back internal walls, and doing as much work as I can to seal the speaker cabinet so that there isn't any leakage into the other sections.
Thanks in advance!
Attachments
Member
Joined 2009
Paid Member
Well I did try the back on again today. Nope. Took it back off. But I realized I had yet to try this speaker out with my Bryston amp and my YBA CD player with some of my best quality recordings - or at least I don't remember using that combination for a long time as it's usually hooked up to my dynalab FM tuner. So this afternoon I hooked up and spun up a Diana Krall CD. Wow, it sounds good - reminds me that this driver is VERY worthy 
The clarify on voices is wonderful.
The clarify on voices is wonderful.
Last edited:
Thanks for info
Read all 40 pages just bought 3 an cast 15's and 2 cast 8's these will be behind a false screen wall with drivers around 3 ft from back wall I want some serious movie theatre sound. 5.1 on my pioneer avr and for critical listening 2 channel on my Nelson f5. Thinking after reading your thread about doing open baffle phy hp style. But was wondering how critical the front baffle strength will need to be any thoughts would much appreciated
Read all 40 pages just bought 3 an cast 15's and 2 cast 8's these will be behind a false screen wall with drivers around 3 ft from back wall I want some serious movie theatre sound. 5.1 on my pioneer avr and for critical listening 2 channel on my Nelson f5. Thinking after reading your thread about doing open baffle phy hp style. But was wondering how critical the front baffle strength will need to be any thoughts would much appreciated
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.